How to Check if Service Pack One for Windows 7 is Installed or Not

Before downloading and installing SP1 for Windows 7, you need to check if it is already installed or not. In this article, I will be showing you two methods to verify if SP1 is installed or not. To check if Windows 7 SP1 is already installed, follow the below steps:

If Service Pack 1 is listed under Windows edition, SP1 would be already installed on your computer.

For example, in the below snapshot, you can see that Windows 7 SP1 is not installed, as the Windows edition is only Windows 7 Ultimate

After Windows 7 SP1 is installed, it will be displayed as :

You can also know if SP1 is installed by using winver

Click the Start button , and inside the Search programs and files textbox, type winverand then click on winver.exe

The About Windows page will open.

The below snapshot is for a Windows 7 without SP1

whereas this one is for Windows 7 with SP1, as you can see its now Build 7601

Summary

In this article I have shown you two different methods to check if SP1 for Windows 7 is already installed or your system or not. Doing so, will make you decide whether SP1 for Windows 7 is required or not.